Smoothing and polishing material



I (M Mantel) R. s. JENNINGS,

smomlm AND POLISHING MATERIAL. No. 298474. Patented May 13, 1884.

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SIVIOOTHING AND POLISHING MATERIAL.

SPECIFICATION forming part of Letters Patent No. 298,l74, dated. May 13,1884.

Application filed September 29, 1883.

To aZZ whom it may concern:

Be it known that I, RALPH S. JENNINGS, a citizen of the United States,residing at Boston, in the county of Suffolk and State of Massachusetts,have invented certain new and useful Improvements in Smoothing andPolishing Materials, of which the followingis aspecification, referencebeing had therein to the accompanying drawings.

The object of this invention is to provide for the sand, emery, andother similar materials which are used for smoothing and polishing asupport which shall be superior to thatprovided by the paper heretoforeused.

Figure 1 shows in perspective a piece of my improved polishing orsmoothing material. Figs. 2 and 3 show modifications thereof. Fig. lillustrates the flexibility of the material, whereby it is adapted to beused in a corner or contracted space for smoothing or polishing. Fig. 5is a sectional View of an endless band or belt of the material, theframe and apparatus being substantially similar to those now in use, andwith which my improved polishing material. can be employed.

Heretofore in the manufacture of polishing materials analogous to mineuse has been made of paper in' one or another of its forms as a supportor backing to receive the sand or emery or other substance depended onfor producing the polishing 0r smoothing effect.

Much trouble and inconvenience are caused in using these materials, asis well known,it being impossible to have them both sufficiently strongand at the same time sufficiently flexible. lVhen in use the paperbreaks and tears easily, so as to become worthless in a short time. Iprovide a superior backing or support for the sand or other polishingmaterial by securing it to comparatively thin, flexible strips or sheetsof wood veneer, as shown in Fig. 1 at A a, the former letter indicatingthe backing or support, and the latter the particles of sand, emery, orother grinding substance. For some purposes a superior support isprovided by securing together two sheets or strips of wood, onesuperposed upon the other, and one sheet or strip running transverselyto the other.that is to say, so situated as to have its grain transverseto that of the other, as shown in Fig. 2; or several strips (No model.)

1 may be arranged in one plane, and several strips in another plane maybe secured thereto, with the grain running transversely to the grain ofthe aforesaid series, as shown in Fig.3.

Any suitable material may be used for securing the pieces of woodtogether, as glue, cement, &c. Iuse wood of some of the species which,when out into thin sheets, are pliable and flexible, so that the surfacecovered with sand or emery may be bent in any desired way. If the woodis properly prepared, it will aloif therefrom, as strips or smallportions are now out or torn from the sheets of emery-paper orsand-paper. A polishing or smoothing material of this character is muchsuperior to the paper heretofore employed, as it can be used until thesurface covered with sand or emery is worn entirely smooth, whereas, asis well known, when using the ordinary sand-paper or en1ery-paper, theback breaks or tears before the surface which has the sand or emeryloses its efficiency. Preferably the lower sheet of veneer is arrangedwith its grain running the sheet or strip of polishing material-and thesheet to which the sand or emery'is secured has its grain runningtransversely. However, I do not wish to be limited to this the differentsheets. I'Vhen so made,the finished material may be used to advantageover rollers or pulleys, as shown in Fig. 5, this figure illustratingthe method of using an endless band or strip of the polisher. Theguiding or supporting pulleys are represented at O CO, the latter beingarranged to rise and fall in the way now common in machines of thisgeneral class-that is to say, the pulley or roller 0 is mounted inswinging arms or bars E, which can be thrown up and down by means of alever, G, flexibly connected with the said arms or bars E, and arrangedto be moved by the operators foot. The lever G is shown as resting upona fulcrum, 9, about which it rocks, and it bears upward against a link,F.

Vhat I claim is- 1. The polishing or smoothing material constructed,substantially as hereinbefore set forth, of sand, emery, or similargrinding substance secured to sheets or strips of wood, which in turnare fastened to other sheets 01" low a small portion or strip to be outor torn' longitudinally that is to say, lengthwise of specific relativearrangement of the grains of strips having the grain runningtransversely In testimony whereof I afiix my signature in relative tothe grain of the aforesaid sheets or presence of two witnesses. strips,substantially as set forth. v T T 2.Theherein-cleseribedpolishingorsmootli- I RALPH JDLBINGS' ing material,consisting of sand or emery se- Vitnesses: cured to flexible woodensheets or strips, sub- S. R. PooRE, stantially as set forth. HENRY/H.PAGE.

